Jacob P. Skorniak, 49, allegedly assaulted the victim in his pickup truck early on the morning of Jan. 1, according to San Diego police.
Skorniak was a stranger to the woman when he "crossed paths'' with her shortly after midnight in a public place, Lt. Sandra Rapalee-Albrektsen said.
Sex crimes investigators say Skorniak approached the woman in the 800 block of Garnet as she was leaving a New Year’s Eve celebration.
Skorniak is a 5-foot-11, roughly 160-pound white man with short gray hair. He is known to drive a silver-and-maroon 1995 Dodge Ram, Colorado license No. 216AAQ.
Anyone with information about the case was asked to call San Diego County Crime Stoppers at 888-580-8477 or contact the agency online at sdcrimestoppers.org. Tipsters may remain anonymous and could be eligible for a reward of up to $1,000.